1. Study of the Universe is known as ?

  1. Sociology
  2. Cosmology
  3. Universology
  4. Petology

2. Approximately how many Galaxies are there ?

  1. 10 Billion Galaxies
  2. 100 Billion Galaxies
  3. 1000 Billion Galaxies
  4. 10000 Billion Galaxies

3. Big Bang theory explains ?

  1. Origin of Universe.
  2. Origin of Sun.
  3. Laws of physics.
  4. None of above.

[ Explanation : Big Bang theory explains explains origin of universe. It was formulated and proposed by the Belgian astronomer and cosmologist "Georges Lemaitre". ]

4. Big Bang was an explosion that occurred ?

  1. 10 Billion years ago
  2. 15 Billion years ago
  3. 20 Billion years ago
  4. 25 Billion years ago

5. Which is correct order of solar system starting from Sun ?

  1. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
  2. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Neptune, Uranus
  3. Mercury, Venus, Mars, Earth, Jupiter, Saturn, Neptune, Uranus
  4. Mercury, Venus, Earth, Jupiter, Mars, Saturn, Uranus, Neptune

6. Which Planet is dwarf planet

  1. Mercury
  2. Pluto
  3. Mars
  4. Uranus

[ Explanation : Pluto is a dwarf planet.Mercury, Venus, Earth and Mars are called terrestrial planets.Jupiter, Saturn, Uranus and Neptune are called Gaseous planets.]

7. Diameter of Sun is ?

  1. 12 Lakh kms
  2. 13 Lakh kms
  3. 14 Lakh kms
  4. 15 Lakh kms
   
      [ Explanation : "Size of sun compared to Earth" : Sun is thirteen lakh times as that of Earth.]

8. Which are the main gases present in Sun ?

  1. Hydrogen and Helium
  2. Hydrogen and Argon
  3. Argon and Helium
  4. Hydrogen and Carbon Diaoxide
        [ Explanation : Sun is composed of 75 % of hydrogen and 26.5 % of Helium.]

9. Surface temperature of Sun is about ?

  1. 5000 degree celsius
  2. 5500 degree celsius
  3. 6000 degree celsius
  4. 6500 degree celsius
   [ Explanation : Surface temperature of Sun is about 6000 degree Celsius and temperature at the centre is around 15,000,000 degree Celsius. ]

10. Which planet is biggest in size in solar system ?

  1. Mercury
  2. Venus
  3. Neptune
  4. Jupiter